Toroidal coil winding machine



March 22, 1955 E. w. REDLICH I 2,704,637

TOROIDAL 'COIL WINDING MACHINE Filed Oct. 4, 1949 3 Sheets-Sheet l Q 1 F i ,1: Il J By W March 22, 1955 E. w. REDLICH 2,704,637

TOROIDAL COIL WINDING MACHINE Filed Oct. 4, 1949 3 Sheets-Sheet 2 lA/VE/VTOI? W REEL /C// 8) A TTORA/EY March 22, 1955 E. w. REDLICH TOROIDAL COIL WINDING MACHINE Filed 001;. 4, 1949 3 Sheets-Sheet 3 i f so 2: a 4 I I f v I I ,5 6 I so A I lA/VE/VTOA 141 fiiDL/C/l 36 as 40 42- 2s United States Patent TOROIDAL COIL WINDING MACHINE Ernest W. Redlich, Hartford, Conn., assignor, by mesne assignments, to Western Electric Company, incorporated, New York, N. Y., a corporation of New York Application October 4, 1949, Serial No. 119,503

1 Claim. (Cl. 242-4) This invention relates to a toroidal coil winding machine and more particularly to meenamsms m a toroidal con winding mac-tune ror driving a spur one-piece ring type shuttle and separating the ends mereor.

All oo ect or the invention is to provide an improved toroidal con wmumg machine or we split shuttle type.

Anomer oo ect olthe invention is the provision or an improved mechanism ror o erating me snutue of a toroidal con winding machine.

ln one embodiment or the invention, the toroidal coil winding macnme 15 provided with a smgle-piece spnt ring type shuttle for winding a strand OHLO a toroidal core su ported in a core holder for oscillating movement about its axis and in mternnked relation to the shuttle. 'lne shuttle is engaged on its inner periphery at spaced points by three grooved driving pulleys, which are operauvely connected together ror simultaneous rotation and driven rrom a constant speed motor. A lever guided for movement through a predetermined path and having a shuttle engaging arm is provided for separating the ends of the split shuttle to permit inserting the core and removing the wound coil prior and subsequent to the winding operation.

Other ob ects and advantages will be apparent from the IOLiOWlIlg detailed description thereor when considered in connection with the accompanying drawings illustrating a preferred embodiment of the invention in which big? 1 is a fragmentary front elevational view, partly in section, of a toroidal core winding machine embodying the features of the present invention;

Fig. 2 is an enlarged rragmentary side elevational view of the shuttle showing the split or separable jointed ends thereof;

Fig. 3 is a sectional elevational view of the portion of the shuttle shown in Fig. 2 and taken on the line 22 thereof and showing, in dotted lines, one end portion of the ring laterally disposed relative to the other;

Fig. 4 is a detailed sectional view taken on the line 4-4 of Fig. 1;

Fig. 5 is a sectional elevational view looking from the front of the machine similar to that of Fig. 1, showing the shuttle separating lever in another position and the ends of the shuttle in separated relation;

Fig. 6 is a vertical detailed sectional view taken on the line 66 of Fig. 1 showing the shuttle separating arm in its normal relation to the shuttle;

Fig. 7 is a fragmentary plan sectional view through the shuttle and the drive therefor taken on the line 7-7 of Fig. 5; and

Fig. 8 is a fragmentary top plan view of the machine showing the shuttle moved to its open or separated position.

Referring to the drawings, the shuttle 15 (Figs. 1, 5, 7 and 8) is shown interlinked with a toroidal core 17 firmly supported between the clamping jaws 19 and 20 of a core holder 22. The holder 22 is supported on the base 24 and is provided with a vertically extending shaft 26 having an axis extending upwardly in substantially coaxial relation with the core 17 and in substantially tangential relation to the shuttle 15 and about which the holder 22 may be oscillated by any suitable drive mechanism, as for example, such as is disclosed in the co-pending application of C. C. Stevens, Serial No. 119,437, filed October 4, 1949 now Patent No. 2,656,124.

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The shuttle 15 has an outwardly directed peripheral strand-receivmg groove 28 (rigs. 7 and 8) formed by a pair of axially spaced radially extending annular rlanges or walls 29 and 30 connected at their inner edges by a web forming an inwardly directed annular V-snaped rib or track 32. The shuttle is transversely split or ointed at 34 to provide separable ends 35 and 36. The end 35 of the shuttle has end surfaces formed in three planes converging downwardly relative to each other, as viewed in Figs. 2 and 3, which end surfaces are adapted to engage with three conforming downwardly converging end surfaces on the portion 36 of the shuttle. The converging surfaces on the ends of the shuttle, in effect, form a pointed or tapered extremity and a recessed or socketed extremity on the ends 35 and 36, respectively, which cooperate with each other to form a separable joint normally interlocked against lateral displacement but capable of being separated in a direction tangential to the shuttle. The shuttle 15 is made so that the ends 35 and 36 thereof overlap when displaced laterally relative to each other, as indicated in dotted lines in Fig. 3, and the shuttle is then tempered to provide suflicient tension to maintain the ends 35 and 36 thereof in tight engagement when the shuttle is in its normal closed position.

Three drive wheels or sheaves 4040, provided with V-grooves 42-42 and mounted on shafts 44-44, are adapted to engage the inner periphery of the shuttle and drivingly support the shuttle for rotation. The shafts 44, extending in horizontal and parallel relation, are provided with anti-friction roller bearings 46, which are secured in bearing apertures 48 in a bracket or head 50 mounted on the base 24. At the rear ends thereof, the shafts 44 are provided with pulleys 52-52, around which a belt 54 is entrained to effect the simultaneous rotation in the same direction of the shafts 44 and the drive sheaves 40. One of the shafts 44 is provided with a pulley 56 which is connected by a belt 57 to a motor (not shown) for rotating the shuttle drive, and the shaft is also provided with a handle 59, by means of which the shafts 44 and the drive pulleys 40 may be manually rotated.

Being arranged substantially equi-angularly about the axis of rotation of the shuttle, the drive wheels 40 are adapted to eifect a driving engagement with the shuttle at three points thereon. The three sheaves 40 are positioned so that the V-shaped track 32 of the shuttle is pressed radially inwardly into engagement with portions of the conforming grooves 42 in the sheaves 40 with suflicient tension to establish a good driving connection therebetween.

In order to be able to obtain a predetermined driving pressure between the drive sheaves 40 and the shuttle 15 and to adjust the pressure therebetween, means for moving one of the drive sheaves radially is provided. In the embodiment shown one of the shafts 44 is mounted in an eccentric bushing 65 (Figs. 1 and 7) which may be rotated within the bearing aperture 48 to effect a movement of the drive pulley radially relative to the shuttle. The anti-friction bearing 46 is secured to the ecentric bushing 65, as by being pressed therein, and the eccentric bushing is locked in its adjusted position in the bearing aperture 48 by set screws 67, the shanks of which threadedly engage threaded holes in the bracket 50 and the heads of which engage opposite ends of the bushing 65. In like manner, the bearings 46 on the other two shafts 44 are retained in proper position axially in the apertures 48 by screws 68.

Means are provided for separating the ends 35 and 36 of the shuttle and moving one end 35 thereof laterally relative to the other end to permit the application and removal of toroidal cores to and from the shuttle. The shuttle separating means in the embodiment illustrated herein comprises a lever 70 having a handle 71 at one end and pivotally secured at its other end for lateral pivotal movement about a shank 72 extending upwardly from a block 73. The block 73 is mounted for vertical rocking movement about a pin 74 secured in the bifurcated end of the supporting bracket 75 mounted on the base 24. An arm 77 (Figs. 2, 5 and 6) extending downwardly and laterally'from the lever 70 forms a connector member having a groove 78 therein for receiving the V-shaped rail 32 or the shuttle 15. In its normal position, the Connector member 77 is disposed in vertically spaced relation with respect to the upper portion of the shuttle 15, as indicated in Fig. 5. In order to move the end portion 35 of the shuttle to open position, the shuttle is stopped in a position with the joint 34 adjacent the holder 22 and slightly above the horizontal diameter of the shuttle, as shown in Fig. 2. The lever 70 is then rocked upwardly to disengage the end 35 from the end 36 and to raise a portion of the shuttle to clear the uppermost drive sheave 40, as shown in Fig. 5, after which the lever 70 is moved laterally to move the end 35 laterally to fully open position in spaced relation to the end 36, as shown in Fig. 8.

A block 80 (Fig. l), secured to the support 75, is adapted to engage the lever 70 and support it in its normal position. A pin 82 projecting downwardly from the lever 70 is receivable in a groove 83 in the supporting block 80 and cooperates therewith to lock the lever 70 against lateral movement while it is in its normal inoperative position. The pin 82 and the grooved block 80 serve to guide the lever 70 through its proper path of movement and serve to prevent the lateral movement of the lever 70 until the end 35 of the shuttle is raised a distance sufficient to fully disengage it from the end 36 and from the uppermost drive wheel 40.

A slider 85 is slidably mounted on the flange 29 of the shuttle for free rotation thereon about the shuttle in the usual manner as disclosed, for example, in Patent No. 2,192,694 to A. L. Quinlan. The slider 85 cooperates with the shuttle to perform the unwinding of the strand from the shuttle and the winding of the strand onto the core 17 in a well known manner.

In the operation of the above-described winding machine the shuttle 15 is stopped in the loading position as indicated in Fig. l and the lever 70 is rocked upwardly to separate the end portion 35 of the shuttle from the end 36 and to clear the upper drive sheave 40, as shown in Fig. 5, after which the lever 70 is moved laterally to open position, as shown in Fig. 8. A toroidal core 17 may then 'be positioned about the end 36 of the shuttle and clamped in operative winding position rela tive to the shuttle and between the jaws 19 and 20 of the holder 22 by turning the clamp actuating handle 90 (Fig. 1). With the core properly positioned and clamped in the core holder, the end 35 of the shuttle maybe returned to its closed position with a lateral and downward movement of the lever 70. The shuttle may then be rotated in a reverse direction to permit the winding of a predetermined length of wire into the wire-receivmg groove on the shuttle, and upon completion of such winding the rotation of the shuttle is stopped and the end of the strand is manually secured to the core. With the end of the strand attached to the core, the shuttle is rotated in a forward direction to wind the strand onto the core as it is oscillated by the core holder. Upon completion of the winding operation, the lever may be actuated to open the shuttle and permit the removal of the wound toroidal coil.

It is to be understood that the above-described arrangements are simply illustrative of the application of the principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall within the spirit and scope thereof.

What is claimed is:

In a toroidal coil winding machine, the combination of a one-piece transversely split annular shuttle having ends forming a joint and tensioned to exert pressure on said joint, a plurality of grooved drive pulleys frictionally engaging the inner periphery of the shuttle for supporting said shuttle for rotation and imparting rotation thereto, drive shafts on which said pulleys are mounted, bearing means for supporting said shafts for rotation and against axial movement and in substantially equally spaced relation one to another, drive means for simultaneously rotating said shafts in the same direction to effect the rotation of said shuttle, an eccentric bushing mounted on said bearing means for rotatably supporting one of said shafts, said eccentric bushing being oscillatable to adjust said one shaft and pulley thereon relative to the shuttle to vary the pressure between said shuttle and said pulleys, and means for lock ing said eccentric bushing in adjusted position.

References Cited in the file of this patent UNITED STATES PATENTS 1,323,490 Putnam Q Dec. 2, 1919 1,555,756 Rauschenbach Sept. 29, 1925 2,171,119 Belits Aug. 29, 1939 2,326,969 Quinlan Aug. 17, 1943 2,444,126 Wirth June 29, 1948 FOREIGN PATENTS 50,858 Germany Feb. 17, 1890 280,378 Germany Nov. 12, 1914 308,077 Germany Sept. 28, 1918 

